Question

the length of a rectangular field is thrice its breadth.its perimeter is 400m.find its length and breadth.​

Answer 1

Answer:length=150m

             breadth= 50m

Step-by-step explanation:

Perimeter of a rectangle = 2(l+b)

400=2(l+b)

l+b = 200

l=3b

4b = 200

b= 200/4

b=50

Answer 2

Answer:

length is 150m

breadth is 50m

Step-by-step explanation:

Let breadth be x

then ,

length =3x

Perimeter = 2(l+b)

400 = 2(x+3x)

400 = 8x

x = 400/8

x = 50

breadth = x => 50 m

length = 3x => 150 m